AmeriGlo pistol sight sets are machined from bar stock steel and assembled using Swiss made tritium light sources. AmeriGlo night sights feature a 3-dot front and rear sight set with a Green Tritium in the front, and Yellow Tritium rear. AmeriGlo night sights are designed to provide unbelievable transition through all light conditions and will fit your existing holster. With all these features, its easy to see why you will soon be putting AmeriGlo night sights on all your firearms.